U.S. Air Force Staff Sgt. Derek Dobbins, 633rd Civil Engineer Squadron fire department crew chief, performs a maintenance check on a high-pressure water hose attached to an alert vehicle at the fire department on Langley Air Force Base, Va., Jan. 15, 2013. These water levels must be monitored daily to ensure vehicles are equipped and ready to respond to an emergency. (U.S. Air Force photo by Staff Sgt. Jeff Nevison/Released)